A scientific community cannot practice its trade without some set of received beliefs. These beliefs form the foundation of the "educational initiation that prepares and licenses the student for professional practice". The nature of the "rigorous and rigid" preparation helps ensure that the received beliefs are firmly fixed in the student's mind. Scientists take great pains to defend the assumption that scientists know what the world is like...To this end, "normal science" will often suppress novelties which undermine its foundations. Research (...) is therefore not about discovering the unknown, but rather "a strenuous and devoted attempt to force nature into the conceptual boxes supplied by professional education". (shrink)

Problems and Paradigms is a feature series devoted to discussions of major problems in biology. Past contributions have dealt with the selector gene hypothesis, problems of pattern formation, the phenomenon of paramutation, theories of aging, and the origins of life. In this article, Brian C. Goodwin discusses the problem of morphogenesis, in terms of the idea of the genetic program and in the light of recent findings.